Not looking for an ID but found in central BC
More information (if someone does want to take a crack)
- growing on conifer stump
- stipe length about 40-50mm (went pretty far into a crack in the stump), width about 4mm
- cap width about 25-35mm
- gills emarginate, distant, cinnamon beige
- KOH negative
- Spores, idk I couldnt get a good shot of them. Hyaline, ellipsoidal
The shadow on the gills looks brown to me.
Also the general look of the gills (subdistant, beige slightly decurrent), combined with it being highly hygrophanous (based on the two-toned appearance cap photo and how you mentioned that it shriveled up really fast) makes me more confident in my suspect.
I'm curious what your suspects are.